Where is saved the Preference for "Write XMP IDs to Files on Import"?

Question

Hello,
In a Jsx, I test if the "CreateLayerMarkersFromFootageXMP" is activated in the AE preferences with:
app.preferences.getPrefAsBool( "Metadata", "CreateLayerMarkersFromFootageXMP" );
But I cannot do the same for this one:
"Write XMP IDs to Files on Import", which is also in the Preference Panel, but not saved in the Preference files I think.
Or if it's saved in, where? And how can I check it in ExtendedScript?
Thanks.

Answer 1

It appears that the Metadata section only carries that one pref it seems.
["Metadata"]
          "CreateLayerMarkersFromFootageXMP" = 01
The only other XMP prefs I've found in the AE CC files are:
"Adobe After Effects 12.1 Prefs.txt"
["Metadata"]
          "Strip project XMP history from rendered output" = 00
          "Strip project XMP history from saved projects" = 00
["XMP Writing"]
          "Maximum retries" = "5"
          "Seconds between retries" = "1.000000"
"Adobe After Effects 12.1 Prefs-indep-general.txt"
["Metadata"]
          "CreateLayerMarkersFromFootageXMP" = 01